Double-balloon three-channel ureteral dilation conduit kit and method of use thereof

Abstract

The present invention relates to a double-balloon three-channel ureteral dilation conduit kit and a method of using the kit, comprising a ureteral catheter and a guide wire; a balloon 1 is provided at one end of the ureteral catheter, and a balloon 2 is provided at a side of the ureteral catheter away from the balloon 1; a first channel, a second channel, and a third channel are sequentially provided at one end of the ureteral catheter away from the balloon 1, the first channel is communicated with the balloon 1, the second channel is communicated with the balloon 2, an opening is provided on the side of the ureteral catheter, the opening is located between the balloon 1 and the balloon 2, and the opening is communicated with the third channel; a first joint is provided at the top of the balloon 1; a second joint is provided at the top of the guide wire; the first joint and the second joint are detachably connected. The present invention reduces the renal drainage channel, and adds an independently packaged whisker-shaped guide wire, so that the overall circumference of the conduit is reduced, and the ureteral catheter is conveniently placed into the ureter using the guide wire.

Description

Technical Field

[0001] The invention relates to the technical field of ureteroscopic surgical treatment, and in particular to a double-balloon three-channel ureteral dilation conduit kit and a use method thereof. Background Art

[0002] Compared with rigid ureteroscopes, flexible ureteroscopes have a bendable function and can handle ureteral stones that go up the ureter to the kidney during lithotripsy. More and more patients are receiving ureteral flexible ureteroscope surgery. For kidney stones with surgical indications, percutaneous nephrolithotomy was the absolute mainstream for a long time before the development of ureteral flexible ureteroscope technology. Compared with percutaneous nephrolithotomy, flexible ureteroscope lithotripsy does not require renal puncture, so there is no risk of renal bleeding caused by puncture dilation and pulling the scope during lithotripsy. With the improvement of ureteral flexible ureteroscope technology and the promotion of this technology, in recent years, more and more kidney stones with less load and surgical indications and upper ureteral stones have been treated with ureteral flexible ureteroscopes. Percutaneous nephrolithotomy combined with ureteral flexible ureteroscope to remove residual stones is also a hot topic of research. For kidney stones with high hardness and unsuccessful extracorporeal shock wave lithotripsy, ureteral flexible ureteroscope lithotripsy has become the first choice.

[0003] In fact, the ureter is an elastic, water-expandable muscular tube with a large passive expansion capacity, which can be understood from the anatomy of the ureter. Compared with mechanical force to expand the ureter, water and gas expand the ureter more gently and evenly. As a urologist, it is very easy to understand that the ureter is expanded by water and the inner diameter increases: when ureteral stones obstruct the ureter, the kidney and the part above the ureteral obstruction plane are expanded to varying degrees by urine, and the inner diameter of the ureter may even exceed 20mm. Moreover, this expansion is mostly reversible and is not accompanied by obvious damage to the anatomical structure and function of the ureter: after the acute ureteral obstruction is relieved for a period of time, B-ultrasound or angiography is performed again, and the originally expanded ureter no longer expands, the renal effusion disappears, and the renal function returns to normal. However, we can understand from the following experience that in the early stage of ureteral acute obstruction relief, the ureter remains dilated: patients with ureteral stones and renal colic undergo ureteroscopic lithotripsy, and only a spacious ureter is found, without ureteral stones, which means that the stones have been discharged. After the stones have been discharged, we can still obtain a spacious ureter.

[0004] The project team has applied for a patent for "A double-balloon tube kit for dilating the ureter", application number CN201810563731.5. The patent has four channels and a renal drainage port, which can avoid renal hypertension caused by the inability of urine to flow out of the kidney. However, the ureter is a narrow tube, and the four-channel structure with stable functions is difficult to design too thin, which significantly increases the difficulty of placing it in the ureter. Summary of the invention

[0005] Based on this, the purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide a double-balloon three-channel ureteral dilation conduit kit and a method of using the same.

[0006] Double-balloon three-channel ureteral dilation catheter kit, including ureteral catheter and guide wire;

[0007] One end of the ureteral catheter is provided with a balloon 1, and a side of the ureteral catheter away from the balloon 1 is provided with a balloon 2; the end of the ureteral catheter away from the balloon 1 is provided with a first channel, a second channel, and a third channel in sequence, the first channel is communicated with the balloon 1, the second channel is communicated with the balloon 2, an opening is provided on the side of the ureteral catheter, the opening is located between the balloon 1 and the balloon 2, and the opening is communicated with the third channel; the top of the balloon 1 is provided with a first connector;

[0008] A second connector is disposed at the top end of the guide wire; the first connector and the second connector are detachably connected.

[0009] Furthermore, the guide wire is a whisker-shaped guide wire.

[0010] Furthermore, the second connector is in a "J-shape" shape; a protrusion is provided at the top of the balloon one, a through-hole is provided on the protrusion, and the second connector passes through the through-hole.

[0011] Furthermore, it also includes a hydrostatic pressure measuring device; the hydrostatic pressure measuring device is connected to the third channel.

[0012] Furthermore, it also includes a negative pressure mechanism; the negative pressure mechanism is connected to the first channel and the second channel.

[0013] Furthermore, the negative pressure mechanism includes a negative pressure tube and a driving mechanism; the negative pressure tube is provided with two output ports, and the two output ports are respectively connected to the first channel and the second channel; the input port of the negative pressure tube is connected to the driving mechanism, and the driving mechanism generates negative pressure in the negative pressure tube.

[0014] Furthermore, the driving mechanism includes an air pump connected to an input port of the negative pressure tube.

[0015] Furthermore, an annular convex strip is provided at the top end of the balloon 1, and the annular convex strip is arranged around the outer side of the raised portion.

[0016] The present invention also provides a method for using a double-balloon three-channel ureteral dilation conduit kit, which uses the double-balloon three-channel ureteral dilation conduit kit to perform ureteral dilation, comprising the following steps:

[0017] Step 1: Connect the ureteral catheter and the guide wire through the first connector and the second connector, insert the ureteral catheter and the guide wire through the working channel of the large-channel cystoscope, and place the tubing kit into the appropriate position of the ureter under the push of the push tube;

[0018] Step 2: injecting sterile saline into the first channel and the second channel at the same time, filling balloon 1 and balloon 2, and blocking the ureter segment between balloon 1 and balloon 2;

[0019] Step 3: Sterile saline is injected into the third channel, and the sterile saline is discharged from the opening to expand the ureter segment between balloons 1 and 2; the pressure in the ureter is detected by a hydrostatic pressure measuring device, and the pressure in the third channel and the ureter segment between balloons 1 and 2 is maintained at a set value for 10 seconds;

[0020] Step 4: After the ureter is dilated, use a vacuum pump to extract the liquid in balloon 1 and balloon 2, and then remove the ureteral catheter and guide wire.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The double-balloon three-channel ureteral dilation conduit kit and the use method thereof of the present invention reduce the number of renal drainage channels and add an independently packaged whisker-shaped guide wire, and the ureteral catheter and the guide wire can be connected through the first joint and the second joint, so that the overall circumference of the conduit is reduced, and the ureteral catheter can be conveniently placed into the ureter using the guide wire; since the kidney generates urine in a relatively slow process, if the dilation can be completed and the liquid in the two balloons can be drawn out in about 30 seconds, the renal pressure will not be increased due to the accumulation of urine in the kidney;

[0023] The second connector of the present invention is in a "J" shape, so that the second connector does not scratch the inner wall of the ureter, better protects the ureter, and can better insert the ureteral catheter and the guide wire; the top of the balloon one is provided with an annular convex strip, and after the liquid in the balloon one and the balloon two is extracted by the vacuum machine, the balloon one is contracted and tightened, and the annular convex strip is used to lock and surround the convex part and the "J"-shaped second connector, so that when the guide wire and the ureteral catheter are extracted, the second connector will not contact the inner wall of the ureter, and the second connector will not scratch the inner wall of the ureter;

[0024] The present invention can directly measure the pressure of the blocked ureter by arranging a hydrostatic pressure measuring device connected to the third channel, so as to regulate the liquid and gas injected into the third channel and ensure that the ureter is expanded to a suitable size.

[0025] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic structural diagram of a ureteral catheter of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the guide wire of the present invention;

[0028] Figure 3 It is a schematic structural diagram of a balloon 1 of the present invention.

[0029] In the figure: 10, ureteral catheter; 11, first channel; 12, second channel; 13, third channel; 14, opening; 20, balloon 1; 21, first joint; 211, raised portion; 212, perforation; 22, annular convex strip; 30, balloon 2; 40, hydrostatic pressure measuring device; 50, guide wire; 51, second joint; 61, negative pressure tube; 62, vacuum pump. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] It should be understood that, in the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0032] It should be noted that, in the description of this application, unless otherwise clearly specified and limited, the terms "disposed", "connected", "connected", and "hollow" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] See also Figures 1 to 3 The double-balloon three-channel ureteral dilation conduit kit of this embodiment includes a ureteral catheter 10 and a guide wire 50;

[0034] Specifically, a balloon 1 20 is provided at one end of the ureteral catheter 10, and a balloon 2 30 is provided at a side of the ureteral catheter 10 away from the balloon 1 20; a first channel 11, a second channel 12, and a third channel 13 are sequentially provided at the end of the ureteral catheter 10 away from the balloon 1 20, the first channel 11 is communicated with the balloon 1 20, the second channel 12 is communicated with the balloon 2 30, an opening 14 is provided on the side of the ureteral catheter 10, the opening 14 is located between the balloon 1 20 and the balloon 2 30, and the opening 14 is communicated with the third channel 13; a first joint 21 is provided at the top of the balloon 1 20;

[0035] More specifically, the top of the balloon 20 is provided with an annular ridge 22 , and the annular ridge 22 is arranged around the outer side of the raised portion 211 .

[0036] Specifically, the top of the guide wire 50 is provided with a second connector 51; the first connector 21 and the second connector 51 are detachably connected;

[0037] More specifically, the guide wire 50 is a whisker-shaped guide wire 50;

[0038] More specifically, the second connector 51 is in a “J-shape”; a protrusion 211 is provided at the top of the balloon 20 , a through hole 212 is provided on the protrusion 211 , and the second connector 51 passes through the through hole 212 .

[0039] In the preferred embodiment, a hydrostatic pressure measuring device 40 is further included; the hydrostatic pressure measuring device 40 is connected to the third channel 13; more specifically, the constant pressure pump can be a water injection pump or a liquid injection pump with controllable and settable pressure.

[0040] In the preferred embodiment, a negative pressure mechanism is also included; the negative pressure mechanism is connected to the first channel 11 and the second channel 12; specifically, the negative pressure mechanism includes a negative pressure tube 61 and a driving mechanism; the negative pressure tube 61 is provided with two output ports, and the two output ports are respectively connected to the first channel 11 and the second channel 12; the input port of the negative pressure tube 61 is connected to the driving mechanism, and the driving mechanism generates negative pressure in the negative pressure tube 61; the driving mechanism is preferably an exhaust fan 62, and the exhaust fan 62 is connected to the input port of the negative pressure tube 61.

[0041] In the preferred embodiment, the diameter of the ureteral catheter 10 is 8Fr-12Fr, and in the preferred embodiment, it is 9Fr.

[0042] In the preferred embodiment, the diameters of the first channel 11, the second channel 12, and the third channel 13 are 2.5Fr-4Fr, and the preferred diameter in the present embodiment is 2.5Fr.

[0043] The method for using the double-balloon three-channel ureteral dilation conduit kit of this embodiment is to use the double-balloon three-channel ureteral dilation conduit kit to perform ureteral dilation, and includes the following steps:

[0044] Step 1: Connect the ureteral catheter 10 and the guide wire 50 through the first connector 21 and the second connector 51, insert the ureteral catheter 10 and the guide wire 50 through the working channel of the large channel cystoscope, and place the tubing set into the appropriate position of the ureter under the push of the push tube; the balloon 1 20 is located at the top of the ureteral catheter 10, and another balloon 2 30 is located at the body of the ureteral catheter 10 at a distance of 20 to 30 cm from the balloon 1;

[0045] Step 2: injecting sterile saline into the first channel 11 and the second channel 12 at the same time, filling the balloon 1 20 and the balloon 2 30, and blocking the ureter section between the balloon 1 20 and the balloon 2 30;

[0046] Step 3: Sterile saline is injected into the third channel 13, and the sterile saline is discharged from the opening 14, and the ureter segment between the balloon 1 20 and the balloon 2 30 is expanded; the pressure in the ureter is detected by the hydrostatic pressure measuring device 40, and the pressure of the third channel 13 and the ureter segment between the balloon 1 20 and the balloon 2 30 is maintained at the set value for 10 seconds;

[0047] Step 4: After the ureter is dilated, the liquid in balloon 1 20 and balloon 2 30 is extracted by using the vacuum pump 62 , and then the ureteral catheter 10 and the guide wire 50 are extracted.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] The double-balloon three-channel ureteral dilation conduit kit and the use method thereof of the present invention reduce the number of renal drainage channels and add an independently packaged whisker-shaped guide wire, and the ureteral catheter and the guide wire can be connected through the first joint and the second joint, so that the overall circumference of the conduit is reduced, and the ureteral catheter can be conveniently placed into the ureter using the guide wire; since the kidney generates urine in a relatively slow process, if the dilation can be completed and the liquid in the two balloons can be drawn out in about 30 seconds, the renal pressure will not be increased due to the accumulation of urine in the kidney;

[0050] The second connector of the present invention is in a "J" shape, so that the second connector does not scratch the inner wall of the ureter, better protects the ureter, and can better insert the ureteral catheter and the guide wire; the top of the balloon one is provided with an annular convex strip, and after the liquid in the balloon one and the balloon two is extracted by the vacuum machine, the balloon one is contracted and tightened, and the annular convex strip is used to lock and surround the convex part and the "J"-shaped second connector, so that when the guide wire and the ureteral catheter are extracted, the second connector will not contact the inner wall of the ureter, and the second connector will not scratch the inner wall of the ureter;

[0051] The present invention can directly measure the pressure of the blocked ureter by arranging a hydrostatic pressure measuring device connected to the third channel, so as to regulate the liquid and gas injected into the third channel and ensure that the ureter is expanded to a suitable size.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A double-balloon three-channel ureteral dilation conduit kit, characterized in that: include: A ureteral catheter, wherein one end of the ureteral catheter is provided with a balloon 1, and a side of the ureteral catheter away from the balloon 1 is provided with a balloon 2; the end of the ureteral catheter away from the balloon 1 is provided with a first channel, a second channel, and a third channel in sequence, the first channel is communicated with the balloon 1, the second channel is communicated with the balloon 2, an opening is provided on the side of the ureteral catheter, the opening is located between the balloon 1 and the balloon 2, and the opening is communicated with the third channel; a first joint is provided at the top of the balloon 1; A guide wire, wherein a second connector is provided at the top of the guide wire; the first connector and the second connector are detachably connected; The second connector is in a "J-shape" shape; a protrusion is provided at the top of the balloon, a through-hole is provided on the protrusion, and the second connector passes through the through-hole.

2. The double-balloon three-channel ureteral dilation conduit kit according to claim 1, characterized in that: It also includes a hydrostatic pressure measuring device; the hydrostatic pressure measuring device is connected to the third channel.

3. The double-balloon three-channel ureteral dilation conduit kit according to claim 2, characterized in that: It also includes a negative pressure mechanism; the negative pressure mechanism is connected to the first channel and the second channel.

4. The double-balloon three-channel ureteral dilation conduit kit according to claim 3, characterized in that: The negative pressure mechanism includes a negative pressure tube and a driving mechanism; the negative pressure tube is provided with two output ports, and the two output ports are respectively connected to the first channel and the second channel; the input port of the negative pressure tube is connected to the driving mechanism, and the driving mechanism generates negative pressure in the negative pressure tube.

5. The double-balloon three-channel ureteral dilation conduit kit according to claim 4, characterized in that: The driving mechanism comprises an air pump, and the air pump is connected to the input port of the negative pressure tube.

6. The double-balloon three-channel ureteral dilation conduit kit according to claim 5, characterized in that: The top of the first balloon is provided with an annular convex strip, and the annular convex strip is arranged around the outer side of the raised portion.

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